Physics Forums

Physics Forums (http://www.physicsforums.com/index.php)
-   Classical Physics (http://www.physicsforums.com/forumdisplay.php?f=61)
-   -   Substance evaporation temperature (http://www.physicsforums.com/showthread.php?t=665481)

indianaronald Jan20-13 01:50 AM

Substance evaporation temperature
 
Can a substance only evaporate at the T(sat) at that particular pressure and why not even at a higher temperature?
Example of a refrigerant at room temperature, pressurized container. But when it's opened, the P falls and T(sat) falls, so it goes to that T(sat) temperature to evaporate. But why? Why not evaporate at the room temperature itself?

mfb Jan20-13 05:34 AM

Re: Substance evaporation temperature
 
Evaporation reduces the temperature of the surface until you have an equilibrium (or something close to it) at the surface.


All times are GMT -5. The time now is 01:34 PM.

Powered by vBulletin Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
© 2014 Physics Forums